Pilippo guidi



2 Sheets--Sheet 1'.

(No Model.)

I. GUIDI. OVEN FOR TREATING METALS.

No. 601,511. Patented Mar. 29,1898.

(No Model.) 2 Sheets-Sheet 2. P. GUIDI.

Jaye ljzya UNITED STATES ATENT FFicE.

FILIPPO GUIDI, OF ROME, ITALY.

OVEN FOR TREATING METALS.

SPECIFICATION forming part of Letters Patent No. 601,511, dated March 29, 1898. Application filed July 25, 1896. Serial No. 600,546. (No model.)

Italy, have invented certain new and useful improvements in ovens for the treating of metals and separating of the same by means oven, taken longitudinally thereof.

is a vertical transverse sectional view taken of the well-known combustibles under addition of oxyhydrogen gas, of which the following is a specification.

The present invention relates to an oven which furnishes the means of using industrially the valuable properties of the oxyhydrogen gas without being obliged to use considerable forces which would be necessary to obtain sufficient quantities of the above-mentioned gas and without endangering the refractory material of which the oven itself is constructed in consequence of the long exposure to the high temperature obtained by the union of the hydrogen with pure oxygen as they are obtained by electrolysis.

Figure l is a vertical sectional view of the Fig. 1

through the chamber A of Fig. 1. Figs. 2

and 3 are detail sectional views of the valve C and the block D.

This oven (shown in longitudinal section) consists of a parallelepipedon in masonry,

the width of which is about two-thirds of its utilizing the heat of the gases which escape from the chamber A, which chamber B communicates with the chimney G The walls of the chambers or furnaces are lined with fire-bricks resting on the lower side on the ordinary brickwork, from which it is separated by a thin layer of sand, while at the upper side they are covered bya mass of sand confined by a brick wall K. At the bottom of the oven there are two empty cavities provided with semicircular vaults X Y, which serve for the double purpose of reducing the amount of solid masonry and of giving passage to the cars to be conveyed below the center of both the melting and the roasting or heating chamber.

The fire-box has equally the form of a parallelepipedon, so that it may entirely close the oven by means of the parallelepipedon or solid E of fire-bricks. Said parallelepipedon or solid E is placed upon a truck located on the platform of a car some millimeters higher than the plane of the grate,-so that it may easily run from the car to the interior of the fire-box, thus forming the desired closure E, E,) as hereinafter explained. At right angles to its first opening the fire-box'has a second one provided for the purpose of permitting the block D to be pushed so far as to occupy part of the valve 0, as is shown in the drawings.

The reverberatory oven A is first heated to the maximum heat, which can be obtained, for instance, by burning ordinary combustibles. One then changes the position of the massive valve C, made of refractory materials with a central metal c0re-z'. (2., instead of closing the vault of the furnace'it will act as a door, as is shown by the dotted lines.

In consequence of the above-mentioned arrangement only the oxyhydrogen gas will remain in the oven, carried by the pipes ti, which serve to raise the temperature to the necessary point for treating the metals and their ores, sublimating, if necessary, the detrimental metals or metalloids by varying the quantity of the two constitutive elements of the gas-i. e., the oxygen or the hydrogen to the point of injecting only one of the two in order to obtain the oxidation and the reconstitution of the materials should it be necessary.

I do not wish to limit myself to the precise arrangement of pipes T 25 shown.

It is evident that the refractory material will be exposed but-a very short time to the enormous temperature produced by the oxyhydrogen gas. On the contrary, by the partial use of one of the componentst'. e. in the oxidation and in the reductionthe temperature will still rise in the materials submitted to the treatment, while the gas will act as a refrigerant on the sides and on the vault of the oven.

The moment the valve 0 will have been displaced the two solids D and E will be put in their place, as hereinbefore described and as the dotted lines show, in order to avoid vacuum adjacent to the oven in action and containing oxyhydrogen gas, where explosions may occur through leaks of hydrogen. For the same purpose the passage G between the oven A and the chamber Bis to be closed. The lost heat will be utilized in the chamber 13. Finally, when extracting the treated metals, either by the door or by the hole F, one will inject carbonic acid into the oven through the tube T for the sake of preventing explosions.

In Fig. 1 is shown the manner in which throat or passageG is closed by means of a block G, which is pushed in the direction indicated by the arrow. In order to open the passage, said rectangular block is simply drawn in a direction opposite to that of the arrow. The block may be formed of refractory material.

Figs. 2 and 3 are sectional views of valve 0 and block D. Valve 0 and block D are of refractory material. The valve is operated by means of a crank c, keyed on shaft a, which passes through the whole length of the block.

I claim 1. In combination the oven having the two chambers A B, the furnace E at the end of one chamber, the contracted connection between the two chambers, means for cutting off the chamberA from the furnace, the pipe for introducing oxyhydrogen gas, and means for closing the port between the two chambers substantially as described.

2. In combination the masonry-walls having within them the chambers A and B with the contracted opening between them, the

3. In combination with the oven having the chambers A and B, connected together, the furnace at the end of the chamber A, the massive valve 0 pivotally supported, the front opening adjacent to the valve, said valve being adapted to close said opening and form part of the arch of the furnace or by swinging the same down to close the fire-box from the chamber A, and the sealing-blocks for sealing the furnace, and the opening adjacent to the valve, substantially as described.

4:. In combination, the oven having the chamber therein, a supply for oxyhydrogen gas, the pipe for introducing oxyhydrogen gas, a supply for carbonic-acid gas and a pipe for introducing carbonic-acid gas, the said pipes being connected with the oXyhydrogen-gas supply and with the carbonicacid-gas supply, substantially as described.

In witness whereof I have hereunto set my hand in presence of two witnesses.

FILIPPO GUIDI.

W'itnesses:

G. B. ZAMARD, R. KLoss. 

